Machine



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No. 447,149.' Patentedeb-z4, 1891.

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4(11o Model.) 1 5 Sheets-Sheet '2. J. ERLENWEIN.

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(Nd Model.) 45 Sheets-Sheet 3.

J.- :a'RLElwvEIN.V FILE CUTTING MACHINE.

10.447,149. Patentedreb. 24, 1891.

.5l Sheets-Sheet 4.

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J.- ERLENWEIN. PILEAGUTTING MACHINE.,

Patened Feb. 24,1891.'

5. t e e h s w e e h s 5 E., .m m4 G EA WM NG Bm mw EW im I nr. m. .m M 0 m No. 447,149. Patented Feb. 241891.

l UNITED STATES PATENT I OFFICE.

J ULIUS RLENVEIN, OF EDNKOBEN, GERMANY.

FILE-CUTTING MACHINE.

SPECIFICATION forming part of Letters Patent N o. 447,149, dated February 24, 1891. Applicationled September 23, 1890, Serial No. 365,877. (No model.)

To all 1072/071?, t may concern: j

Be it known that I, JULIUs ERLENWEIN, manufacturer, of Edenkoben, in the Kingdom of Bavaria and GermanEmpire, have invented new and useful Improvements in File-Cutting Machines, of which the following is a specification, reference being had therein to the accompanying drawings.

This invention relates to the arrangement and construction of a new or improved filecuiting machine, which consists of four main parts, viz: the device for holding the chisel or cutter, in combination with automatic feeding mechanism; the mechanism which intensifies the blow struck upon the end of the file and raises the latter from its anvil; the screw-gear which operates the automatic cutting mechanism and causes the cuts to be wider in the'center, and finally the table and carriage which operate automaticallyl and enable the serrations in the files to be cut at any desiredangle.

This new or improved file-cutting machine is illustrated in the accompanying drawings, in which- Figure l is a side elevation of the machine. Fig. 2 is a front elevation of the same. Fig. 3 is a detail side elevation of the adjustable file-supporting table of the machine. Fig. 4 is a plan view of the saine; and Figs. 5 to 9 are detail views of parts of the machine, hereinafter more particularly described.

b and c are two standards erected upon a pedestal a, Figs. l and 2, and carry between them a chisel blade or cutter d. rIn the, latter is arranged an anvil e, formed of a cylindrical block. The cutterenters the pedestal d by means of a screw-threaded pin or projection gf, and is fixed in the desired position by the nut f. The anvil e is formed upon its periphery with a transverse groove h, which is enlarged toward the centerv and receives the end of a soft-zinc strip, which is subsequently laid over the periphery of the anvil e. The zinc strip is used toI protect the side of the file -which is first cut or serrated from the blows in cutting the serrations formed on the other side, which is last out. A table y is arranged higher up the standards b and c upon bearings k e', and consists of two T-irons z, Figs. 3 and 4, connected together by cross-pieces fm and l. On the right side and somewhat below the same is mounted a screw-spindle fn, which rests upon the,

auponthe spindle n a sleeve u, which can be easily-*moved to and fro. It is perforated and can be easily displaced upon the end of' the spindle. The latter is furnished near the bearing o with a pin o, acting as a carrier and engaging for this purpose with a notch 'v' of the lengthening piece u. Between the bearing s and the disk t, fixed to the sleeve u, is arranged a spring w, which serves to couple the spindle and sleeve fn, and u together. Upon the screw-spindle fn, a nut B is mounted, being connected at its upper end with a carriage A, sliding upon the rails e. Upon the end ofthe spindle n is mounted a toothed wheel x and a loose lever y', together with two pawls l and 2, which engage with the teeth of the wheel x, so that the lever y may, when actuated,impart a rotary motion to the wheel ai, the sleeve u, and the spindle n.

The lever y is connected by means of a sliding piece movable in a slot of the lever,

lwith a link 3, which can be adjusted by a coupling-clamp 4. kThe rear end of this link 3 rests in a circular socket13,conneetedwith an adjustable nut 7. The latter moves upon a screw-threaded bolt 6, the end of which rests in a groove 14 of the disk 5. The latter is fixed upon one end of a shaft 32, mounted in suitable bearings 40 and carrying at its other ond a disk 33, which is furnished with a pin 34, engaging in an opening 35 of the connecting-rod 36. The latter is jointed with a crank-lever 37, which embraces the pin 33 of the disk 39, keyed upon the driving-shaft V. At each revolution of the said drivingshaft V. the disk 5 is rotated by means of the connecting-rod 36, the disk33, and the shaft 32, and the connecting rod or link 3 causes the lever y to oscillate, so that the pawls l and 2 will move one tooth of the wheel x. This causes the spindle or shaft n to rotate and the carriage A to move with the fileholder 18, carried. by the carriage A, toward the chisel or cutter.

IOS

The nut 7 above mentioned is actuated by imparting a suitable rotary motion to the screw-bolt 6; whereby the pawls 1 and 2 may be caused to move several teeth of the gearwheel at, the consequence of this arrangement being that a sham stroke or cut may be made at times, while at other times a real i cut is formed. A lever 8, connected by a socketjoint 15 to the front end of the connecting rod or link 3, extends upward through a guide 16 on the spindle a and terminates with a knob h2. \Vhen this lever S is drawn up or down, the oscillations of the lever y will be long or short, and hence a different eut will be formed. Thus finer teeth or serrations can be made at the beginning and at the end of the ile than in the center. This adjustment of the lever can be limited by stoppins.

As soon as a Iile has been fully cut the lever g, ixed to the rail of the table, is pulled, whereby the short sleeve u is released from the long screw-spindle, so that the return motion ot the carriage A can now be accomplished by means of the crank-handle p. lVhen the carriage A has been moved sufficiently far from the chisel or cutter, the spindle and sleeve `n and u are again connected together by merely releasing the lever g from its last position, so that the spring w may now effect the coupling. The file-holder above mentioned is arranged upon the carriage A in such a manner that each tile can be accurately set in a central position. This is eiected by means of the two screws 11 and 12, Figs. 3 and 4, between which the front endris guided, while the rear and pointed end of the tile can be suitably set.

A mechanical device C is fixed below tothe connecting-piece m of the table y, serving` to give the table a suitable angular position relatively to the chisel or cutter. This device C consists of a nut C', resting in bearings 19 and through which moves a screwspindle 20, set in rotation by a crank-handle 21, and fixed by its upper end to the connecting-piece m. The automatic motion of the chiselholder and of the depressing device is illustratedin Figs. 5 to 7. A plate D, xed to the standard c, is provided along its longitudinal sides with rails or bars E F, between which can slide a sledge G, furnished at its upper end with a screw-spindle Il, imparting motion thereto. The latter turns in a nut J, provided on its periphery with teeth gearing with a worin l( and rests in a fork-shaped bearing L, which prevents it from moving laterally. The worm K is carried in a bearing N of the plate D. Upon the prolongation of the axis of the worm is mounted a handwheel lll, by turning which the nut J is rotated and the screw-spindle II, with the sledge G, is moved up and down. Upon a pin Q, fixed to the sledge G, the lever P is pivoted, which carries the chisel or cutter. The rear end of the lever P carries a hinge R', in which a rod R enga ges. The latter passes through a frame S, provided with a spring T, and carries at its upper end two rings U, which clasp the driving-shaft V. Between the two rings U a projection or roller lV is arranged to pivot upon a pin w'. The roller XV is located in a small cavity or recess V of the driving-shaft V, and hence when the said shaft V accomplishes one revolution the rodR is raised and the front end of the lever P, carrying the chisel or cutter, is pressed down upon the tile. Vhen, on the contrary, the roller XV en ters the recess V', the rod R sinks and the lever P is correspondingly raised at its outer end.

To intensify the pressure of the chisel, a springT is arranged in the frame S, while another spring X is attached to an eye below the hinge R and on one side of the lever P. This spring X can vbe more or less contracted or expanded by a set-screw Y and assists the raising of the chisel. The front end of the lever P carries an arm P', which is connected by means of a screw-bolt P to arod a. The latter is jointed to the block or chisel holder cl' by means ot' a bayonet-joint a. Two nuts Z2 b are screwed upon the rod a and serve to further secure the bayonet-joint. The opposite end of the block d carries a pressurescrew e', furnished with nuts f. This screw e operates against a plate g', behind which the chisel is arranged in a notch or recess rl" and firm] y held by the plate g and the pressure-screw c'. The Sledge G carries a lever h, which pivots upon the pin 'i'. This lever is furnished at its rear end with a link m and a rod or bar k', which is provided for the purpose of adjustment with a coupling-clamp k, and is connected by the links b and fm and lever b' with the axis a' and the hammer a, Fig. i. The axis m" is guided through brackets A', 29, and 30 of the standard c.

Upon the driving-shaft V is mounted a disk provided with a cam 27 and operating at each revolution upon the projection z', connected with the axis 0c". A spiral spring 0' is coiled upon the rod 7e between the fixed ring o" and the projection or bracket c", xed to the standard c and serving as a guide for the said rod 7e. Another spring 1J' is arranged between the stop 31 and an adjustable ring t2 of the axis fr", and below the bracket A of the standard c another spring p" is coiled on the axis x". One end ot' the spring p" bears against the ring Z", adj ustable on the axis ac", while its other end bears against a disk f2, sliding in the standard c and capable ot' being displaced by a screwspindle t", carried by the bracket A', with the aid ot' a crank-handle c", so that the spring p" may be more or less contracted or expanded.

The arm h of the lever, Figs. 5 and 6, is bent down and provided with a hollow boss or enlargement. In the latter is arranged a rod r', acting upon lthe tile and held in the said boss or enlargement by the screw s'. The arm h' can be adjusted by means of a IOO y2S, the'projection z of the axis x.

screw-spindle c', which is 'guided byjthe' nutv o of a ange u', each integral With the sledge` G, and by the nut w appertaining to the arm hf. The nut o moves upon a pin fu". For this purpose the head of the spindle c is perforated, so that the lever h can be made to assume any suitable position.

The above-described machine operates in the following manner: WVhen the drivingpulley B, mounted on the shaft V, rotates in the direction of the arrow shown in Fig. l, it imparts a similar motion to the disk a! and raises, Vwith the aid of the cam 27, the projection or tappet z', and with it the axis cc and the hammer a, fixed thereon. The lifting of the axis oc causes the rod 7c to sink, the arm 7L pressing the file upon the anvil by means of its rod r. The springs jp and 1J of the axis 5c, which are thus contracted, act upon the latter and cause the hammer to deliver a downward blow as soonas the disk 0c has released, owing to its inclined plane This blow can be increased, if required, by turning the spindle 1f by means of the hand-wheel c and hence by tightening the spring p. IVhen the blow has been struck, the curvature of the cam 27 comes again in contact with the projection z to raise the hammer. At this moment the roller lV enters the recess V of the driving-shaft V, and the spring T, in connection with the spring X, raises the front part of the lever P, carrying the chisel or cutter, and hence withdraws the said cutter or chisel from the tile. At the same time the connectingrod 36 is raised by the pin 38 ot' the disk 39,- mounted on the driving-shaft V, so that the disks 5 and 33 accomplish a revolution and impart a motion to the toothed Wheel through the connecting-rod or link 3, the lever y', and the pawls l and 2, the said wheel a: moving the carriage A and the le fixed thereon forward again by means of the spindle n. As soon as this is over the operation is repeated, the chisel or cutter being placed again over the file by reason of` the roller IV having again left the recess V', and by means of such roller the rod R and the spring T are actuated, whereupon the hammer delivers the next blow. NVhen the file has been cut over about a quarter of its length, the attendant pulls the knob h2. The serrationsor cuts will now become a little coarser, but very slightly so. Vhen the file is threequarters cut, the knob h2 is pushed back and the serrations become immediately finer. The above-described machine can cut all kinds of files and by it old files may be readily recut when dulled.

lVhat I claim, and desire to secureby Letters Patent of the United States, is`

1. In tile-cutting machines, the mechanism for automatically feeding the le, indicated by a screw-spindle n, connected with the filetable and rotated by the toothed Wheel fr, the rotation of which wheel is carried .out by n pawls with the aid of a lever y', a connect- CIJ ing-rod 3, jointed to the'link 36 by means of the socket-joint 13, the nut 7, the shaft 32, and the disks 5 and 33, and a crank-lever` 37, actuated by the driving-shaft for the purpose of regulating the extent of the stroke of the pawls and of obtaining coarse or tinecuts or serrations, substantially in the manner and for the purposes hereinbefore described. 2. In a iile-cutting machine, the mechanism for moving the chisel or cutter holder automatically, indicated by the arrangement ot'l an adjustable pin Q, upon which the lever P, carrying the chisel, is arranged to pivot, the other end of the said lever-21 e., the end opposite that carrying the chisel-being con-A nected by a rod R with two rings U, carrying a roller IV, and, clasping the drivingshaft, while the said roller enters, when the driving-shaft rotates, a recess formed in the said shaft, so that the up-and-down motion thereby impart-ed to the lever carrying the chisel or cutter can be intensified by the springs T X, substantially as described.

3. In a file-cutting machine, the mechanism for pressing the le tightly upon the anvil and for actuatingthe hammer, indicated by a movable and adjustable lever h', one end of which is connected with a pressure-piece o", while its other end is jointed by means of a rod It and a lever b with the axis x, carrying the hammer, which axis is surrounded by springs and is furnished with a projection z', actuated by the cam cc', mounted on the main shaft, substantially in the manner and for the purposes hereinbefore described.

4. In a file-cutting` machine, the combination, with a table having a threaded spindle journaled thereunder, provided at its ends, respectively, with a handle and a ratchetwheel, and a nut movable on the spindle and carrying atits upper end a carriage movable on the table, of a lever pivoted on the spindie and carrying pawls engaging the ratchetwheel, a shaft journaled below the table and provided with a disk at each end, a lever-andlink connection between one of said disks and the pawl-carrying lever, and a lever-andcrank connection between the other of said disks and a disk on the driving-shaft of the machine, substantially as yshown and described, for the purpose set forth.

5. In a tile-cutting machine, the combination, with a vertically-guided sledge and a lever pivoted on the sledge and carry-ing a chisel or cutter at its outer end, of a springcontrolled vertical lever connected at one end to the inner end of the chisel-carrying lever and having at its other end rings embracing the driving-shaft of the machine, and a roller pivoted between the rings and entering a re-A cess in the driving-shaft, substantially as ing lever and provided at its outer end with projection on the hammer-exis, substantially lo a removable pressure rod or finger, a springas shown and described.

controlled vertical axis mounted in bearings In Witness whereof I have hereunto set my on the machin@carrying a hammer at its hand in presence of two Witnesses. 5 lower end and having a projection or tappet Berlin, May 28, 1890.

on one side, lever-nnd-1ink connections be- J ULIUS ERLENVEIN. tween the axis and the chisel-carrying lever, Witnesses: and :L eam-disk mounted on the driving-shaft lV. I-I. EDWARDS,

of the'machne and adapted to enga-ge the GEO. H. MURPHY. 

